Water-heater



No Model.) 2 Sheets-Sheet 1.

J. M. LAING. WATER HEATER.

Patented Sept WW I m m S 6 m m a w D m A m 4 V R l (No Model.) 2Sheets--Sheet 2. J. M. LAING. WATER HEATER.

No. 526,496. Patented Sept. 25, 1894.

Jzwnks 21.2162 I'm UNITED STATES PATENT OFFICE.

JAMES M. LAIN G, OF BAY CITY, MICHIGAN.

WATER-H EATER.

. SPECIFICATION forming part of Letters Patent No. 526,496, datedSeptember 25, 1894.

Application filed April 18, 1894.

To all whom it may concern.-

Be it known that 1, JAMES M. LAING, a citizen of the United States,residing at Bay City, in the county of Bay and State of Michigan, haveinvented a new and useful Water-Heater, of which the following is aspecification.

My invention relates to water heaters, and has for its object to providea heater with a maximum heating surface, whereby all of the heatproduced by the fuel may be utilized to provide for a free circulationof the water through the various chambers composing the heater; and toprovide means whereby the parts of the device may be readilydisconnected and replaced without displacing the other members of thestructure.

Further objects and advantages of the invention will appear in thefollowing description, and the novel features thereof will beparticularly pointed out in the appended claim.

In the drawings: Figure 1 is a perspective view of a heater embodying myinvention. Fig. 2 isavertical central section of the same. Fig. 3 is avertical section upon a plane at right angles to the plane of Fig. 2, asshown by the line 3-3 of Fig. 2. Fig. 4 is a horizontal section on theline 4-4. of Fig. 2. Fig. 5 is a similar view on the line 55 of Fig. 2.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawin s.

designates the fire-pot, 2 the subjacent ashpit, and 3 the interposedgrate; the firepot being provided with a fuel-door 4 and the ash-pitwith opposite similar doors 5, whereby access may be had thereto.

The fire-pot is provided with an outstanding lateral flange 6 whichserves as a support for the casing or shell 7, and Within this casing orshell is arranged a nest of heating boxes or chambers 8, which are outof contact with the containing casing on shell and with each other. Inthe construction illustrated in the drawings, these heating boxes orchambers are arranged in two parallel series, each containing eightboxes or chambers, and thehorizontal sectionalshapethereof is such thattheir outer narrow sides are in a common plane adjacent to thecontaining casing or shell. The bottoms of the heating Serial No.508,015. (No model.)

boxesorchambers are inclined upward toward their inner sides, and areconcaved or hollowed to form an intermediate space 9 inalignmentwiththefueldoor,beforedescribed.

The fire-pot is surrounded by a jacket 10 forming a water compartment11, which is in communication with the inlet pipes 12, tapping the sameat its opposite sides, and the superjacent heating boxes or compartmentsare severally in communication with the compartment 11 by means of thevertical conduotors l3.

Arranged above, and spaced from the upper ends of the heating boxes orchambers, is a distributing chamber or reservoir 14, with which saidboxes or chambers severally communicate by means of the connecting pipes15. The outlet or distributing pipes 16 connect with the top of thedistributing chamber or reservoir.

This being the construction of the improved heater, the operationthereof is as follows: The water descending through the inlet or supplypipes 12 enters the water jacket around the fire-box and after becomingpartially heated ascends to the heating boxes or chambers to give placefor water at a lower temperature. The water rises through the said boxesor chambers 8 until it reaches the superjacent distributing chamber orreservoir, from whence it passes to the point of use through thedistributing pipes 16. The products of combustion rise from the fire-boxand circulate freely between the heating boxes or chambers, in directcontact with their surfaces, all of which are exposed to the actionthereof, and when said products reach the under surface of thedistributing chamber they are spreadand, impart their remaining heatthereto.

By this construction all parts of the surfaces of the heating boxes orchambers are exposed to the action of the heat from the fire-box, andthe narrowness of said boxes or 9 5 chambers brings the water incontiguity with said surfaces, whereby the greater portion of the heatis utilized.

The construction, as will be obvious, is simple, and the independentarrangement of roe the boxes or chambers, and the fact that each box orchamber extends to the outside of the minor details of construction maybe resorted to without departing from the spirit or sacrificing any ofthe advantages of the invention,

Having thus described my invention, I

claim-- A water heater comprising a fire-box,a surrounding water jacketprovided-with an exterior lateral flange 6, a casing, resting upon saidflange, twin series of parallel spaced heating boxes or chambers 8arranged vertically above the fire box with their outer sides flush withthe outer walls of thetwater jacket, and their inner wallsinrproximityto' each other, the lower ends of said boxes or chambersbeing rounded or concaved to form a space 9 communicating with thefire-box, a fuel door beingarranged in the casingopposite one end ofthis space 9, pipes connecting the boxes or chambers severally with thewater jacket,and in that pipe communicating with the water jacket, adistributing chamber gorv reservoir arranged abovethe plane of the upperends of the heating boxes or chambers and adjacent to a central outletopening in the top of the casing, pipes connecting said reservoir withthe heating boxes or chambers,

and distributing pipes communicating with the reservoir, substantiallyas specified.

In testimony that I claim the foregoing as vmy own I have hereto affixedmy signature in the presence of. two witnesses.

JAMES LAING.

Witnesses:

GEO. REILLY, GEO. E. CARROLL.

